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The use of paper in industrialized nations continues to increase, in some cases accounting for almost 20 percent of all household garbage [source:Essential Guide]. Although the trees used to make new paper are a renewable resource, old-growth forests are often chopped down to make room for the pulpwood trees, which are quickly planted and harvested to make paper. Recycled paper results in a significant net savings in terms of water and energy used, as well as pollutants emitted into the environment.
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In 2003/04, paper and card accounted for almost a third of all household waste collected for recycling, with almost 1.3 million tonnes being collected in England. This means, however, that there is still a considerable amount that isn't recycled and is largely going to landfill or incineration.
Although the raw material for making paper is predominantly trees, it is a common misconception that recycling waste paper saves trees. Trees are grown for commercial use and harvested as a long term crop with new trees planted to replace those cut down. In addition, papermakers are able to use the parts of the trees that cannot be used in other industries such as construction and furniture making. Different species of trees provide fibres that are used in different types of paper. Coniferous softwoods such as spruce, pine birch and cedar produce fibres which are long (average fibre length is 3mm) and are used to make papers which have a lot of strength. Hardwoods such as birch and aspen do not grow as fast as softwoods and produce short fibres (average fibre length 1mm) which are used for bulky papers such as writing paper and fluting, which is the middle part of cardboard. Nearly all paper is made from wood grown in these "sustainable" forests. The more important environmental issues are:
If you have junk mail, windowed envelopes, or Yellow Pages then please contact you local authority. These materials can be more awkward to recycle, and the availability of recycling facilities varies around the country.
There are also different grades
of paper and board collected mainly from agricultural and industrial
sources. There are actually about 50 different grades for paper recycling
companies to grapple with! You can find details of the other grades
here on this website: www.letsrecycle.com/
If your council doesn't pick up paper for recycling via a kerbside scheme, they may have some collection points for newspaper, magazines and telephone directories. For example, there may be paper banks at shopping centres and at civic amenity sites. Go to http://www.recyclenow.com/. This website allows you to obtain a list of the nearest recycling banks to you. All you have to do is enter your postcode to find your nearest recycling banks!
The Yellow Pages Directory
Recycling Scheme offers a freephone recycling helpline - 0800 671 444
- which provides advice on where and how to recycle old Yellow Pages
directories. Opportunities to recycle the old Yellow Pages range from
kerbside schemes and recycling banks at local supermarkets and bring
sites, to schools recycling initiatives as part of the Yellow Woods
Challenge - http://www.yellow-woods.co.
If you do not have a kerbside collection, or local drop off scheme, then make your visits to collection points as you are passing - don't make a special journey in the car to take any materials for recycling - you could be using more energy and causing more atmospheric pollution than you are saving!
There are many waste paper merchants and national paper collection companies which will collect a quantity of paper for recycling. In the first instance contact whoever is already dealing with your normal waste, as many waste management companies now also provide recycling services. Alternatively, a quick scan through the local business directory should provide some numbers for recycling collectors.
Cartons are not made from paper alone but comprise of about 75% paper, 20% plastic (polyethylene) and 5% aluminium foil. As they are an amalgam of materials, they cannot be recycled along with ordinary paper. They can be reprocessed into other items or incinerated to produce energy, or landfilled. There are very few collection points for the reprocessing of such cartons in this country, although a reprocessing plant was recently constructed in Scotland. Contact The Alliance for Beverage Cartons and the Environment for further details.
The future of recycling ultimately depends on there being a market for the materials collected. Recycling is not just collecting materials and taking them to the recycling bank, it is about "closing the loop" and buying recycled too. Paper mills cannot continue to produce recycled paper if people do not buy items made from it.
Most supermarkets and high street stationers now sell a range of recycled products, such as writing paper, notebooks, file paper, diaries with recycled paper content, calendars, paper tablecloths and napkins, tissues, toilet rolls, kitchen paper and other items. If you cannot see the product you want and you think it could be available made from recycled materials, ask if the shop intends to stock such things in the future - if a lot of people ask, it may encourage the shop to add to its recycled range. The retailer needs to have an incentive to stock the products.
Some charities also sell recycled products such as greetings cards and stationery through their mail order catalogues. Contact the ones you would be interested in supporting and ask if they have a catalogue.
Many printers and office stationery suppliers now use or sell recycled paper. You could ask your usual supplier to make it available, or look in the Yellow Pages for local suppliers.
WRAP produces the Recycled
Products Guide which lists recycled products available in this country.
Visit the site at http://www.
Sometimes the ink is not removed from the paper when it is reprocessed. The ink is dispersed into the pulp, discolouring it slightly, which is why recycled paper can have a greyish tinge. If the paper is to be de-inked, this can be done in one of two ways, by washing or flotation.
Washing - As the paper is pulped, chemicals can be added which separate the ink from the paper and allow it to be washed away in the large amounts of water used. (The water can then be cleaned and re-used.)
Flotation - Air can be passed through the pulp, producing foam which will hold at least half of the ink and can be skimmed off.
Sometimes the pulp is also bleached; hydrogen peroxide and chlorine are commonly used bleaches, though the former is the more acceptable as it breaks down into water and oxygen on disposal. Chlorine can combine with organic matter under certain conditions to produce organo carbons, including dioxins, which are toxic pollutants.
Although the de-inking process uses water and chemicals, it is still less harmful to the environment than the manufacturing process of new paper.
If you are buying paper in
bulk for an office or business, it is worth looking for a supplier who
can tell you what the recycled fibre content is, and whether it has
been bleached using chlorine, as this is best avoided.
Paper is one
of the easiest materials to recycle. Paper is collected from our kerbside
or recycling banks by local authorities and waste management companies.
Once the paper is collected it is then: Sorted, graded and delivered
to a paper mill. Once
at the paper mill it is added to water and then turned into pulp. The
paper is then screened, cleaned and de-inked through a number of processes
until it is suitable for papermaking. It is then ready to be made into
new paper products such as newsprint, cardboard, packaging, tissue and
office items. It can take just seven days for a newspaper to go through
the recycling process and be transformed into recycled newsprint which
is used to make the majority of Britain’s national daily newspapers.
Recycling a single run of the Sunday New York Times would save 75,000 trees.
If all our newspaper was recycled, we could save about 250,000,000 trees each year!
If every American recycled just one-tenth of their newspapers, we would save about 25,000,000 trees a year.
If you had a 15-year-old tree and made it into paper grocery bags, you'd get about 700 of them. A busy supermarket could use all of them in under an hour! This means in one year, one supermarket can go through over 6 million paper bags! Imagine how many supermarkets there are just in the United States!!!
The average American uses seven trees a year in paper, wood, and other products made from trees. This amounts to about 2,000,000,000 trees per year!
The amount of wood and paper we throw away each year is enough to heat 50,000,000 homes for 20 years.
Approximately 1 billion trees worth of paper are thrown away every year in the U.S.
Americans use 85,000,000 tons of paper a year; about 680 pounds per person.
The average household throws away 13,000 separate pieces of paper each year. Most is packaging and junk mail.
In 1993, U.S. paper recovery saved more than 90,000,000 cubic yards of landfill space.
Each ton (2000 pounds) of recycled paper can save 17 trees, 380 gallons of oil, three cubic yards of landfill space, 4000 kilowatts of energy, and 7000 gallons of water. This represents a 64% energy savings, a 58% water savings, and 60 pounds less of air pollution!
The 17 trees saved (above) can absorb a total of 250 pounds of carbon dioxide from the air each year. Burning that same ton of paper would create 1500 pounds of carbon dioxide.
The construction costs of a
paper mill designed to use waste paper is 50 to 80% less than the cost
of a mill using new pulp.
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Информация о работе Almost anything can be recycled, but certain things are more common